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采用溶剂热技术合成了一种新型手性配位聚合物[Zn2(C7H8O6)2(bipy)2(H2O)2]·4H2O(C7H8O6=2,3-氧-异丙叉基-L-酒石酸根,bipy=4,4′-联吡啶),并通过单晶X射线衍射结构分析、元素分析、热重分析以及红外光谱进行了表征.结构分析数据表明,该化合物属单斜晶系,C2空间群,晶胞参数a=2.02334(14)nm,b=1.13896(4)nm,c=1.01094(6)nm,β=117.366(3)°,V=2.0689(2)nm3.两个晶体学独立的Zn原子均为八面体构型,其中Zn1原子赤道配位点被2个酒石酸根中的4个羧酸根氧螯合配位,2个酒石酸根中剩下的4个羧酸根氧中的2个分别与2个Zn2原子连接形成无限一维链,Zn2原子的另外2个反式赤道配位点被2个水分子氧占据,同时这两种Zn原子的轴向配位点均被4,4′-联吡啶的氮原子占据,形成具有矩形格子[0.51165(3)nm×1.13896(5)nm]的二维层状结构,游离的2个水分子通过氢键作用形成二聚体,并与酒石酸根中未与Zn配位的羧酸氧连接,把二维层状结构连接成三维网状的超分子结构.
A new type of chiral coordination polymer [Zn2 (C7H8O6) 2 (bipy) 2 (H2O) 2] 4H2O (C7H8O6 = 2,3-O-isopropylidene-L-tartrate was synthesized by solvothermal technique. , bipy = 4,4’-dipyridyl) were synthesized and characterized by single crystal X-ray diffraction, elemental analysis, thermogravimetric analysis and infrared spectroscopy.The structural analysis data showed that the compound belongs to monoclinic system, C2 space The lattice parameters a = 2.02334 (14) nm, b = 1.13896 (4) nm, c = 1.01094 (6) nm, β = 117.366 (3) °, V = 2.0689 Of the Zn atoms are octahedron configuration, in which the Zn1 atom equatorial coordination point was two carboxylate two tartrate oxygen chelation coordination, two of the remaining two carboxylate tartrate 2 Respectively, connected with two Zn2 atoms to form an infinite one-dimensional chain. The other two trans-equatorial coordination sites of Zn2 atoms are occupied by two water molecules of oxygen. At the same time, the axial coordination points of these two Zn atoms are all occupied by 4, Bipyridine is occupied by the nitrogen atom, a two-dimensional layered structure with a rectangular lattice [0.51165 (3) nm × 1.13896 (5) nm] is formed, and two free water molecules form dimers by hydrogen bonding And tartrate is not coordinated with the zinc carboxylate oxygen connection, Two-dimensional layered structure of three-dimensional network of connected supramolecular structure.